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USGS Daily Statistics for Texas

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The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 08205500 Frio Rv nr Derby, TX


Frio County, Texas
Hydrologic Unit Code 12110106
Latitude  28°44'11", Longitude  99°08'40" NAD27
Drainage area 3,429  square miles
Contributing drainage area 3,429  square miles
Gage datum 449.05 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1914-10-01 -> 2025-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 44 32 41 53 170 393 228 72 274 177 113 31
2 83 95 33 106 215 705 388 60 210 114 86 31
3 65 169 40 126 188 392 920 69 218 73 83 30
4 43 74 30 44 191 282 1,640 109 164 60 67 31
5 37 53 29 51 180 382 640 88 208 121 73 32
6 33 43 28 78 149 448 470 62 158 255 87 30
7 33 38 26 81 126 341 549 61 83 233 71 29
8 32 35 31 87 103 212 325 47 116 175 74 30
9 31 34 38 75 124 137 217 53 266 118 61 31
10 31 32 31 45 95 99 189 68 277 144 61 30
11 30 30 28 41 64 84 143 41 208 220 59 29
12 30 29 31 47 89 110 105 52 141 178 55 28
13 31 28 34 35 92 180 87 53 87 176 50 29
14 30 27 30 37 123 369 105 398 67 172 48 30
15 30 27 39 32 163 517 169 679 52 196 45 31
16 29 26 41 57 231 601 147 340 60 142 58 37
17 28 28 49 127 401 401 230 131 237 167 76 35
18 28 28 36 78 155 273 379 95 506 212 86 30
19 32 26 39 61 151 332 232 104 281 249 76 37
20 48 25 44 105 274 483 167 69 170 293 58 73
21 33 25 32 111 233 267 164 53 123 166 55 56
22 48 27 33 181 117 174 134 59 164 156 49 35
23 99 31 43 242 93 140 323 126 206 142 45 32
24 77 37 39 139 79 574 249 311 246 162 43 40
25 52 48 32 121 147 313 216 177 192 174 41 51
26 41 47 39 181 325 168 423 102 143 213 39 34
27 35 82 36 179 266 196 218 67 138 147 37 33
28 41 65 37 177 193 238 93 58 195 106 35 32
29 40 21 34 209 227 171 66 79 289 96 34 37
30 36   38 175 318 165 76 111 197 139 32 35
31 33   36   396   92 90   139   35